Self-centering spindle for spinning frames



May 28; 1940. J. RABOISSON 2,202,746

SELF-CENTERING SPINDLE FOR SPINNING FRAMES Filed Feb. 18, 1937 F/gJ F g.2

laltontedlldayza,1940 I h l l I i 2 02 746 6 1 sE F-cENTEmNG SPINDLE FOR SPINNING 'FRAMES Application February 18, 1937, Serial No. 126,496

' In France March 6, 1936 2 Claims. (Cl. 308--'-149) The present invention relates to spindles of the extension 3 of the bolster 2 is perfectly centred,

kind known as self-centering or flexible without play. in the bolster case 4, but with "all spindles, used in spinning frames, twistingmills, the flexibility of the rubber rea progressively silk throwing machines, and winding machines. in direct ratio to the effort.

It provides improvements in the flexible sleeve- The fact that the centre of the sp e of the 5 bearings ofsaid spindles, with a view to obviating bottom 6 of the mount 6 is situated, by s Co the disadvantages which have existed until the ion, n r the mi y f h pivo I of t, i id bearing5 the spindle proper allows the mass in rotation These improvements are hereinafter described to ac e e a Se f-Centering effect, without any 10 and shown in the drawing as applied to a gravity constraint for the spindle proper I, about an axis 10 UNITED STATES PATENT oFF -c spindle of any well-known kind. passing hrough the point I..

Figure 1 3, iew in diametrical section of a The functioning Of this spindle iS therefore flexible spindle, having an'improved sleeve-bearanalogous to that Of a Spinning p ing of the flexible kind improved according to he gyrat y movement which results, i5 15 th i nti I lessened by the rubber ring 8.' This ring, due 15 Figure 2 is an enlarged partial view, on a di to the fact of its adherenceon the'surface of the t i l ti of th sleeve-bearing d of it bolster case 4, reacts to pressurefbut does not b l t of th ki d ith l d 's take the movement of precession which would 1 Figure 3 is a simiiap i ith, t b l of exist with a flexible metallic spring. Practically the kind with Open foot there is no gyratory movement to be noticed.

The gravity spindle, to t sleeveabeafing of Moreover, the mount 6. l'orming a sort of ballwhich are applied the improvements forming the and-socket-jointnot being al With the subject, tt of t i ti is made in t bolster, allows of a certain slow axial displace usual f hi 1 ment favouring the complementary centering of l is the spindle itself of which the lower exthe m and limiting i mpli ude. 25 tremity forming pivot rests in t footstep The weight of the'elemcnts and the reaction of formed at th lower end of th i t z, of which the elastic ring 8, tend to brake the bolster 2 and the upper part is formed as an extension constito return ill into its e a position when'the tuting a Socket 3 effect of want of balance is reduced or disappears.

4 is the bolster case which is fixed in the spindle In the matter of H19 Setting Of the mount 6 in 30 rail of a spinning frame or the like, 5 being the a bolster C358 4 with Open foot Figure 3) the whirl or wharve fixed the Spindle propelin lower end 9 of the bolster case 4 is made separable.

usual fashion above the boister 2 Tightncss is assured by a ring ll! of rubber (oil The improvements forming the subject matter Wslstant) 1n leather, p d y a ock- 3.; of the present invention, consist in the following; member The ab e 6 9 y 8150 '35 In the first place, in havingthe' extremity of b thloaded rly and screwed direct y t t holster 2 the spindle b in a mount 5 the interior of bolster 4 just as it is formed for cup shaped like, with sphericalbottom 6' disgreaser plugs wi h multiple th sh p n posed in the bolster case 4, and in having the ,foot affords as another advantage a more e sy 40 said spherical bottom rest on a corresponding drainage 40 spherical-hollow 4, formed in the bottom of the I Claim! bolster case 4, the s tting of the bolster? .in its n a bearing, r a self-centering pindle for mount 6 is characterised in that, in combination pinning frames r he lik rotatable pind e with the spherical form of the bottom' 6' of the v g a p ed piv t end, a bolster and step in said cup 6 and that of the hollow 4in the bolster one piece having an externally conical bottom the '45 case 4, the extremity l forming a pivot for the lower inner end of which receives the pointed end spindle I is situated at the centre 1 or approxiof the spindle While its upper part forms a socket, mately at the centre ofthe sphere of the bottomv and a bolster case in which is located the sleeve, 6 of the cup shaped mount 6. i the lower inner end of, said bolster case being In the second place,concerning the spring used spherical internally, a cup shaped mount situ- 50 in flexible bearings, in substituting for a metallic ated intermediate the conical bottom of the spring of any kind whatever, an elastic unsplit, bolster and'the spherical lower end of. the bolster ring 8 of rubber, tight set on thesocket 3 of the case, said mount being internally conical tore; bolster 2 and without play in thebolster case 4. ceive and fit the external conical bottom of the, 5 Owing to these improvements, the socket or bolsterand being spherical externally to bear and fit the spherical lower end of the bolster case 2. A bearing as claimed in claim 1 characterhaving the same radius, and one single element ized in that the pointed end of the rotatable for preventing and limiting the lateral and axial spindle is located. at the center of the spherical displacements and the'rotation of the bolster in bottom of said cup-shaped mount and the spheri- 5 the bolster case,sai d element being constituted by cal lower end of said bolster case. 7 5

a continuous rubber ring between the upper part of the bolster case and the socket of the bolster I l JOSEPH RABOISSOIL upon which said ring is tightly applied. 

